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投稿时间:2019-07-18
投稿时间:2019-07-18
中文摘要: 采用不同剂量(0、3、6、9、12、15 kGy)60Co-γ 射线对柄曲霉素(sterigmatocystin,STC)溶液进行辐照处理,研究辐照剂量、不同溶剂以及不同初始浓度对柄曲霉素辐照降解效果的影响。结果表明:60Co-γ射线可有效降解溶液中的柄曲霉素,且降解率随着辐照剂量的增大而增加。当辐照剂量为3 kGy时,STC的降解速率依次为水>氯仿>乙腈>甲醇。当辐射剂量大于6 kGy时,水、乙腈和氯仿中STC的降解率相近,且甲醇中STC降解率也相对增加。在同一辐照剂量下,柄曲霉素的初始浓度越低,其降解率越高。
中文关键词: 辐照 柄曲霉素 60Co-γ射线 降解 高效液相色谱-串联质谱
Abstract:Inthisstudy,thesolutionsofsterigmatocystin(STC)wereirradiatedbydifferentdoses(0,3,6,9,12,15 kGy)60Co-γray radiation.The effects of irradiation dose,different solvents,initial concentrations on STC were investigated.The results showed that STC could be effectively degraded by60Co-γray and the degradation rate increased with the increase of irradiation dose.The STC degradation rate was in the order of water>chloroform>acetonitrile>methanol when the irradiation dose was 3 kGy.Degradation rate in methanol was increased relatively and similar in water,acetonitrile and chloroform at the irradiation dose of greater than 6 kGy.At the same irradiation dose,the degradation rate was higher along with lower initial concentrations of STC.
keywords: irradiation sterigmatocystin 60Co-γ ray degradation high performance liquid chromatographytandem mass spectrometry
文章编号:202014006 中图分类号: 文献标志码:
基金项目:
作者 | 单位 |
赵亚荣,王琼珊,王旭,刘香香,王富华 | 广东省农业科学院农产品公共监测中心,广东广州510640;农业部农产品质量安全检测与评价重点实验室,广东广州 510640;广东食品药品职业学院,广东广州510520 |
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